Well, it is simple: the glass panels allow adequate lighting to illuminate the elevator car and reduce the need for electricity. At the same time, glass provides a 360-degree view of the surroundings. It helps in adding a feeling of space to the elevator, offering greater comfort and convenience.
This is precisely what the AAI ordered for the new integrated terminal recently inaugurated by our Prime Minister, Shri Narendra Modi,

The lift well was constructed with laminated toughened glass and structural spider fittings from dormakaba and the expertise of MMC Group’s Project team.